Filter
Top Products
Glossary and Abbreviations
555-230-024GL-46 Issue 5 January 1998
switchhook
The buttons located under the receiver on a voice terminal.
switch-node (SN) carrier
A carrier containing a single switch node, power units, and, optionally, one or two DS1 converter
circuit packs. An SN carrier is located in a center-stage switch.
switch-node (SN) clock
The circuit pack in an SN carrier that provides clock and maintenance alarm functions and
environmental monitors.
switch-node interface (SNI)
The basic building block of a switch node. An SNI circuit pack controls the routing of circuit,
packet, and control messages.
switch-node link (SNL)
The hardware that provides a bridge between two or more switch nodes. The SNL consists of the
two SNI circuit packs residing on the switch nodes and the hardware connecting the SNIs. This
hardware can include lightwave transceivers that convert the SNI’s electrical signals to light
signals, the copper wire that connects the SNIs to the lightwave transceivers, a full-duplex
fiber-optic cable, DS1 converter circuit cards and DS1 facilities if a company does not have rights
to lay cable, and appropriate connectors.
switch-processing element (SPE)
A complex of circuit packs (processor, memory, disk controller, and bus-interface cards) mounted
in a PPN control carrier. The SPE serves as the control element for that PPN and, optionally, for
one or more EPNs.
SXS
Step-by-step
synchronous data transmission
A method of sending data in which discrete signal elements are sent at a fixed and continuous
rate and specified times. See also association.
SYSAM
System Access and Administration
system administrator
The person who maintains overall customer responsibility for system administration. Generally, all
administration functions are performed from the Management Terminal. The switch requires a
special login, referred to as the system administrator login, to gain access to
system-administration capabilities.
system printer
An optional printer that may be used to print scheduled reports via the report scheduler.
system report
A report that provides historical traffic information for internally measured splits.
system-status report
A report that provides real-time status information for internally measured splits.
system manager
A person responsible for specifying and administering features and services for a system.
system reload
A process that allows stored data to be written from a tape into the system memory (normally after
a power outage).